Pill-machine



(No Model.) j

PILL MACHINE. l, No. 519,525. l .Patented May 8, 1894i.

Vv'tnesses:

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clare the following to be a full, clear, and ex- Vized substances into the form of a tablet or NITED STATES PATENT OFFICE.

` ARTHR G. BROWN, OF ELMIRA, NEW YORK.

PILL-MACHINE.

SPECIFICATION forming part of Letters Patent No. 519,525, dated May 8, 189.11.

v Application filed January 4, 1894. Serial No. 495,719. (No model.)

To all whom it may concern:

Be it known that I, ARTHUR G. BROWN, a citizen of theUnited States,residing at Elmira, in the county of Chemung and State of New York, have invented certain new and useful Improvements in PilllMachines; and I do deact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

My invention relates to an improvementin machines for compressing pills, and has ref-` erence particularly to a device for ejecting a pill from the machine' after it is compressed.

Heretofore, in a well known class of machines used to compress granular or pulverpill, it has been necessary to form the pill in a tablet shape more or less flat, or of a slightly double convex form, in order to properly eject it from the machine by theV action of a hopper, which both feeds the machine with the material to be compressed, and sweeps the pill from off the bed on which it has been compressed, which. is the ejecting die. In such case owing to the operation of the sliding hopper, containing a. space but for a single charge, and of `the position of the lower ejecting die, when the pill is-co1npresse'd, its upper surface forming the bottom of the bed die, the pill if made spherical so as to extend much above the bed die would becut off by. the action of the sliding hopper.

The object of my invention is, while shaping the dies to form a full spherical pill, to so raise the pil'. after it is formed above the-surface of the bed die, as to permit such pill to be discharged by the hopper device while at the same time preventing it from being cut thereby. For this purpose I raise the bed plate on which the hopper slides, and to which the pill israised and from whichit is swept oft, .a distance above the upper surface of the lower bed die, and carry up the pill to such bed plate by means of an ejector working up and down through and above the center of the lower stationary die.

My invention' is illustrated herein, as applied to a well known form of pill making machine, and consequently only so much of such machine is shown and described as discloses the application and operation of my improvement.

Figure 1 is a central vertical elevation, in section, of such a machine, and Fig. 2 a sectional detail. Y

The parts of such a machineconsist of the framework A, in which is mounted adriving shaft B,.carrying a ily wheel C, by which wheel the shaft B is rotated to operate the machine. An upper or compressor die, e, is carried at the lower extremity of a plunger E, which plunger is given a vertically reciprocating movementfrom the driving shaft by means of a link or pitman D, which in turn is connected by a wrist pin b to a crank wheel b carried on the driving shaft.

At this point the parts constituting my in-` v Vention vmay be properly described.

v ,F is a lower adjustable die set into a tubular casing F. its casing when set for operation, and is adj ustable therein, so as to be fixed at any desired distance relative to the upper moving die (so as to control the amount of space between the two dies into which the'material is fed and tothus regulate the sizeof the pill) by being externally screw threaded to engage with the internal threads on said casing. The upper extremity of this die is cut out to form a half circular face to correspond with a half circular face on the die c. The casing, F', is set through a bed plate L, with its upper end Hush with said plate. The upper plunger die e, is arranged to slide down to thecasing, F', and until its outside rim meets the corresponding part of the lower die F, when a perfect spherical cavity is formed.

5 is an ejector working up and down through the center of die F, and having its upper extremity cut out to correspond to the rounded contour of the lower portion of a pill, as well as the concave surface of the bottom of the lower die, F. When the pill is being formed this upper face of the ejector is flush with and forms the center part of the bottom surface of the lower die. The ejector 5 is raised and lowered as follows: G is apitman the upper end of which is pivoted to a rocker H,'w'hich is connected to a rock shaft,

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I, and its lower end provided with a knob, g, held and moving in a cylindrical seat, f2, in the frame of the lower bed die. The lower end of the ejector 5 rests on this knob. An oscillatory up and down movement is imparted to the pitman, G, and consequently the ejector, by the oscillation of the rock shaft, I, which is accomplished by a rocker t', applied to the rear end of said rock shaft, and provided with a friction roll, it, which is adapted to travel in a cam way of a cam, connected with the driving fly Wheel, C. After the rounded pill is compressed bythe moving down of the upper plunger on the lower stationary plunger, as shown in Fig. 2, the ejector is carried up through the lower plunger, carrying the pill `with it until the pill is in aline with the bed plate,-L, when the sliding hopper, orother suitable means, moving laterally ont said bed plate, sweeps off the pill into a proper receptacle. j

Having thus described my invention, what I claim isl. In a machine for forming pills by compression, the combination with an upper die, and means for reciprocating the same, of a lower stationary die, the compressing faces of said dies being of spherical form to make a round pill, a reciprocating ejector, and means for carrying the said ejector up and down through the said lower die, the upper end of said ejector cut out to correspond and be liush with the concavity of the lower die, and a perforated bed plate L above the top of said lower stationary die, on the line of which plate the pill is raised by the said ejector and out of the said lower die, substantially as described.

2. In a machine for forming pills by compression, the combination with an upper die and means for reciprocating the same, of a lower stationary bed die and a cylindrical casing for said lower die, the said casing internally screw,V threaded and the said bed die externally screw threaded, whereby the lower die may be adjusted and set in relative posi tion to the upper die, substantially as described.

In testimony whereof I atX my signature in presence of two witnesses.

ARTHUR G. B'ROWN.

Witnesses:

T. R. MACAFEE, C. F. STEIRSLY. 

